Les Vosti and the 3rd Pioneer Band

Les Vosti of Epsom Rd, Ascot Vale, is pictured on the far right of this detail of a photo of the Headquarters Company, 3rd Pioneer Battalion.  It was taken  during training at Salisbury Plains in 1916 prior to their embarkation to France.  You can find the whole band pictured at the bottom of this page about the 3rd Pioneer Battalion Band - and perhaps help with identifications if you can.